package demo.thread;

import java.util.Scanner;

public class Demo5 {
    public static int flag = 0;
    public static void main(String[] args) {
        Thread t1 = new Thread(() -> {
            while (flag == 0){
                try {
                    Thread.sleep(1);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            System.out.println("t1 线程执行结束");
        });
        Thread t2 = new Thread(() -> {
            System.out.println("请输入 flag: ");
            Scanner in = new Scanner(System.in);
            flag = in.nextInt();
        });
        t1.start();
        t2.start();
    }
}
